Question

an object travels 20m in 2 sec and then another 16 m in 2 sec what is the average speed of the object
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Answer 1

Answer:

9 m/sec

Explanation:

first ,

distance = 20m

time = 2 sec

speed = distance/time = 20/2 = 10m/sec

second ,

distance = 16m

time = 2 sec

speed = distance/time = 16/2 = 8m/sec

average speed = total speed /no of times =  10 +8/2 = 18/2 = 9 m/sec

hope it helps you very well

Answer 2

Given :

• an object travels 20m in 2 sec and then another 16 m in 2 sec

To Find :

• what is the average speed of the object

Solution :

Total distance travelled

==> 20 + 16

==> 36

total time taken

==> 2 + 2

==> 4

Average speed = Total distance travelled/total time taken

==> 36/4

==> 9 m/sec

Extra information :

• Speed = d/t

• F = m. a

• a (bar) = v - v_0/t = Δv/Δt

• w = F x d

• P = W/Δt

• V = 1R

• PE = mgh

• p = mv